Cooking oil can be converted into vegetable ghee by the process of

A). Oxidation

B). Hydrogenation

C). Distillation

D). Crystallization


The contact process is involved in the manufacture of —

A). Nitric acid

B). Sulfuric acid

C).  Ammonia

D). Caustic soda


An alloy is used in making heating elements for electric heating devices is —

A). Solder

B). Alloy steel

C). Nichrome

D). German silver


German Silver is an allow of —

A). Copper, Silver and Nickel

B). Silver, Copper and Aluminum

C). Zinc, Copper and Nickel

D). Silver, Zinc and Nickel


Air is a/an—

A). Compound

B). Element

C). Mixture

D). Electrolyte


Which of the following substance is a bad conductor of electricity but a good conductor of heat?

A). Asbestos

B). Celluloid

C). Purspecks

D). Mica


Carborundum is —

A). Silicon Dioxide

B).  Silicon Carbide

C). Silicon Nitride

D). Silicon Phosphide


Which of the following is the best conductor of electricity?

A). Copper

B). Mica

C). Zinc

D). Silver


Soda water contains—

A). Nitrous acid

B). Carbonic acid

D). Carbon dioxide

D). Sulfuric acid


Which of the following is the basis of the modern periodic table?

A). Atomic mass

B). Atomic number

C). Atomic size

D). Atomic volume

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